“Boys like cookies?” asked Wan, offering them a dish of the tasty morsels. “Help self. Takum hand full!”

Stan took some and took a bite, then held the remainder in his hands to be eaten later. John, however, ate his at once, as was to be expected. Stan smiled to himself in amusement.

“And now to my laboratories and hobby rooms, boys,” said Mr. Nevens. “What are your hobbies, by the way?”

“We’re both keen on archery, Mr. Nevens,” Stan informed him. “We think sailing and camping is swell, and detective work is fun too. But we’ve had enough detectin’ for a while! This cruise we are on is one strictly of pleasure, if we can keep it so!”

Mr. Nevens’ eyes seemed to harden a bit, then they warmed again profusely. And all the while he maintained that contented, friendly smile which Stan so distrusted.

If Mr. Nevens’ cabin with its spacious living quarters and well-stocked larder was interesting, the laboratories were more so. To reach them the boys were taken down into the ground through a cement-lined walkway, brightly painted and lighted by indirect lighting, electrically. They were told that the electricity was from a dynamo, gasoline motor driven, that, from top to bottom, the place was electrically fitted with every comfort and convenience. The entrance into the laboratories was through a heavy, fire-proof, explosive-proof, water-tight door.

“Dynamite would not distort or open this door, nor could water get in, even under pressure, nor fire at 1,000 degrees burn through in less than twenty-four hours,” Mr. Nevens explained. “I have taken these precautions because I am working on many important discoveries and cannot afford to lose the result of years of work. See, here is a television set upon which I am working, built on a principle entirely new in the field. With it I hope to be able to show people in three dimensions upon a special ‘view-disk,’ or panel, instead of the two-dimensional scene of conventional models. My subjects would be rounded and natural instead of flat. And here is a device which, when perfected, will throw a stream of bullets in a carefully controlled sweep at previously unknown speeds and with terrible effectiveness. You see, I am interested in armaments——”

The look upon Stan’s face must have spoken volumes for the eccentric inventor hurried to say, “—Purely from a desire to invent so terrible a weapon eventually that warfare would be impossible without race suicide, boys. Unlike most Pacifists, I believe in fostering the arming of nations so that they will be armed to the teeth, all of them, and therefore afraid to start a war for fear of its consequences to all!”

They were then shown a number of other things in process of development, and still others were left unexplained, after which the party moved on to the exit and passage, up to the surface of the ground. What intrigued Stan was the number of passages honeycombing this underground retreat. No explanation for their presence was forthcoming and he made a mental note to investigate should need arise.

The exit on the surface came up in a glass-domed summerhouse in which were platforms of fine flowers, and a large and well-stocked aquarium. Mr. Nevens knew all of his plants and fishes well and they found him an interesting talker. From all indications he was well-traveled and well-informed. And on every side were indications of plenty of wealth.